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#1 (permalink) |
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Registered User
Join Date: Jan 2007
Location: rehoboth beach, Delaware and New Jersey
Posts: 567
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Decibel levels at Lime Rock and other tracks
I need to meet the 89db level set by most tracks.
Currently my Elise's exhaust consists of: oem header>Larini de-cat pipe>Larini SE silencer above the diffuser. Will this setup meet the 89 db level set by most tracks or will the Larini sport cat need to go back on? -Robert
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Elise'06ST:RAC-Girodisc-Larini 8"-Zoom-Braille-Reverie intake-raceview-Saikou Michi-FFengine damper-Nitron sportpro-RTVbrace-extended undertray
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#4 (permalink) |
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Katana Exige!
Join Date: Mar 2003
Location: Temecula, CA
Posts: 2,297
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I don't think you'll pass. I wonder if a stock muffler would pass those requirements?!
We have a new 8" Larini that exists above the diffuser that we have been running on our Katana Exige. It is very quiet and flows quite well. We have one in stock (more on order) and should be releasing it for sale this week. This might be an option. |
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#5 (permalink) |
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Live to Drive
Join Date: Nov 2006
Location: Rye, NY
Posts: 8,384
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A stock set-up exceeds 89 db in the cockpit, but it all depends upon where they are reading it from.
My car would definitely not pass...LOL
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Driving a Lotus Exige with sticky... performance tires on icy roads or in standing water is about as much fun as walking a high wire treated with WD-40 - Car & Driver BWR supercharged... I suppose I "got the power" now?? |
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#6 (permalink) |
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Registered User
Join Date: Jan 2005
Location: Hudson Valley,NY
Posts: 133
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I ran across this thread.
http://www.elisetalk.com/forums/show...oise+lime+rock when I was trying to find out if a Von Hep would be too loud for Lime Rock. Anyone tried one there yet? 9lbs and a nice price is hard to pass up. |
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#7 (permalink) |
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Registered User
Join Date: Aug 2007
Posts: 105
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I wanted to resurrect this thread and I posted a similar question in the track forum.
I have an arqray twin exhaust and was black flagged at Lime Rock this past weekend and had to end my day early. They had me at 96-98db and the restriction is 89db. One person suggested converting the existing arqray to a single pipe and adding a supertrapp disk silencer. Has anyone else run into this problem and solve it differently? Thanks.
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Beauty: 2006 Elise - storm titanium, bwr sc, sport, track, lsd, black forged wheels, arqray twin, brakeline upgrade, hardtop. Beast: 2007 M5 - 6MT |
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#8 (permalink) |
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009 License to Drill
Join Date: Dec 2006
Location: Asheville, North Carolina
Posts: 793
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10 db difference is twice as loud. I was black flagged at Road Atlanta earlier this year
, Sunday morning "quite hours". Electric cars may be the future, when we are put in old folks homes by race tracks.
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Simplicity is the ultimate sophistication. Leonardo Da Vinci 2005 Elise LRG, Trim Shop interior 2007 Toyota Tundra (about 10 cup holders) 2004 BMW X3 (4 small cup holders) 1980 Rover SD1 |
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#9 (permalink) |
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Registered User
Join Date: Jan 2005
Location: Hudson Valley,NY
Posts: 133
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Let us know if the supertrapp disk silencer brings you into compliance or at least to the point they don`t flag you. I have a Von Hep which is louder than stock and Lime Rock is local, so I would like to be able to go there.
Has anyone run a Von Hep at Lime Rock? Here is a link to Supertrapp SuperTrapp: Performance Exhaust. Have no idea which one would work? Last edited by over40 : 09-23-2008 at 07:02 AM. |
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#10 (permalink) | |
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Registered User
Join Date: Aug 2007
Posts: 105
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Quote:
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Beauty: 2006 Elise - storm titanium, bwr sc, sport, track, lsd, black forged wheels, arqray twin, brakeline upgrade, hardtop. Beast: 2007 M5 - 6MT |
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#11 (permalink) |
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Registered User
Join Date: Sep 2005
Location: CT
Posts: 223
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Run at Lime Rock all the time with stock exhaust. MANY folks have the stage II's and have never been Black flagged. My STi is loud as hell and I've never been black flagged!!
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05 Lotus Elise Sport Hardtop LRG red leather. 04 Skip Barber Race School, Competition certificate; 04 Jaguar XJ Vandan Plas Radiance Red Ivory leather 06 Subaru Tribeca LTD 08 Isuzu Ascender Lux |
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